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Summary of Contents for Bryston 9BSST
- Page 1 POWER AMPLIFIER OWNER’S MANUAL UPDATED 2007-01-08...
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Page 2: Table Of Contents
Power Control Panel Master Curcuit -Breaker AC Power Input Local/Auto Switch Local/External Switch Rack Mounting Instructions Individual Module Removal Channel Fuse Type/Location 5.1 Typical Home Theatre Setup Block Diagram of the 9BSST Typical Performance Graphs Bridging Channels External Dimensions Technical Specifications Important Warranty Information SST FIVE CHANNEL POWER AMPLIFIER Page 1 Page 2... -
Page 3: General Introduction
Installation ( see rack mounting section if applicable ) Ventilation. The most important installation consideration is ventilation. The 9BSST is a convection-cooled amplifier. Unrestricted air-flow across its heat sinks is a must. For this reason do not install anything directly above it. Allow 3.5”... -
Page 4: Input Select Switch
1. Input Select Switch. Each 9BSST channel gives the user the option of switching between either balanced input or single ended input. 2. Balanced Input connector. ( Imp. 20k ) This input connector accepts standard ‘XLR’ or 1/4” TRS . Use quality, 100% shielded cables with gold plated connectors. ‘TRS’ type ‘RCA’ type 3. Single Ended Input. ( Un-balanced input ) ( Imp. 50k ) This input connector accepts standard ‘RCA’ or ‘Phono’ connectors. Use quality, 100% shielded cables with gold plated connectors. Balanced input Vs Single ended input: The balanced input requires a balanced pre-amp source. Balanced... -
Page 5: Output Binding Posts And Polarity
6. Output binding posts The RED binding post is connected to the amplifier output. Connect to this post the (+) terminal on the loudspeaker. The BLACK binding post is connected to signal ground. Connect to this post the (-) terminal on the loudspeaker. When the polarity switch is set for 0 degrees (normal operation ) the output at the RED binding post is in phase with the input signal. When the polarity switch is set for 180 degrees (inverted operation) the the output at the RED binding post is 180 degrees out of phase with the input signal. The Output binding posts provide three different interconnect options. Combinations may be used when bi-wiring. See fig- ure 2 below. Cables should be kept as short as practical and should never be terminated with connectors that may become confused for AC power connectors. Cables should be dressed away from input and power cables. 1. Banana plugs offer a quick disconnect option. Before inserting a banana plug into the binding post be sure to tighten the post nut to avoid rattling and to provide full insertion of the banana plug. Gold plated locking banana plugs are available from Bryston. 2. Spade lugs provide high contact area and secure fastening. Lugs should be gold plated. See diagram for details. Post diameter is 5/16’ ( 8mm ),lug width 5/8” (16 mm). Gold plated spade lugs are available from Bryston. 3. Stripped bare wire up to 3 gauge can be inserted through the hole in the binding post and held in place by tightening the post knob. Additional tightening pressure can be achieved using the wrench provided in the slots of the knob. Do not over tighten or the binding post may become damaged. Note that copper wire is malleable and may require further tightening after the initial installation. Spade lug dimensions SST FIVE CHANNEL POWER AMPLIFIER wrench or coin Fig 2... -
Page 6: Front Panel Description
Front Panel 1. 'SST POWER' switch The front panel label 'ST POWER', is a touch sensitive membrane switch used to apply or remove A/C line power to the 9BSST circuitry. Push firmly the center of the switch until the power-up sequence begins. Push again and the 9BSST will power-down. ( Note: the rear circuit breaker must be on for the 9BSST to power-up) 2. LED Indicators Each 9BSST channel has a LED indicates channel has no power. nlit indicates channel is muted (power-up-down sequence) - i ndicates channel operation is normal. Reen - indicates channel clipping. lashinG indicates channel thermal shutdown. RanGe Power up sequence After pushing the 'SST POWER' switch, each channel led will turn from unlit to red (mute). When the power supplies have stabilized the channel will come out of mute and the led will change to green (normal operation). Unlit led ( No power ) The 9BSST channel led when unlit indicates no A/C mains power is present at the channel. If all channel led indicators are unlit the 9BSST probably needs only to be powered on. A single led not lighting possibly indicates blown channel fuses. When checking fuses switch off the circuit breaker on the rear panel, or unplug the power cord. Use only the specified quick-acting 4 amp 250V 5mm x 20mm fuses. See page 6 for the fuse locations. -
Page 7: Power Control Panel
1. Master circuit - breaker. The 9BSST uses a magnetic-trip circuit breaker (1) to protect the amplifier. This switch should be ‘OFF’ when installing the 9BSST. When switched ‘OFF’ all A/C power is removed from the amplifier, including standby power. The circuit breaker is not the day to day power switch and should be switched and left ‘ON’ after the installation is complete.Use the ‘ST POWER” switch or an external control voltage to Power-up or Power-down the amplifier. Should the breaker trip, lower or remove the amplifier input signals. Switch the breaker to the ‘ON’ position. Then power the unit up normally. The circuit breaker must be ‘ON’ at all times for the 9BSST to operate. 2. AC power input. This is a high current plug for the power cord receptacle. Check that the voltage rating at the right of the connector conforms with your locality. With the circuit breaker ‘OFF’ insert the power cord into the 9BSST, then plug the other end to an approprate A/C power outlet. 3. Power-Up ( Local / Auto switch. ) A. In “Local” position either the front panel ‘ST POWER” switch or an external voltage controls the power-up of the 9BSST. -
Page 8: Rack Mounting Instructions
The 9BSST 19” version may be rack mounted with or without the ability to remove the channels. If removal of the chan- nels is desired then the shipping screws securing the channels need to be removed. REMOVE 4 6-32 SCREWS FROM THIS SIDE REMOVE ALL 6-32 SCREWS ON THE DO NOT REMOVE SCREWS FROM RACK MOUNT BRACKET Rack Mounting Instructions TOP VIEW BOTTOM VIEW SST FIVE CHANNEL POWER AMPLIFIER REMOVE 3 3-32 SCREWS FROM THIS SIDE Removing the channels makes rack mounting far easier as the chassis will be much lighter. Before removing any... -
Page 9: Typical Home Theatre Setup
SST FIVE CHANNEL POWER AMPLIFIER Typical 5.1 Home Theatre Setup HOME THEATRE PROCESSOR Powered Subwoofer 9BSST 5X120W/CH Center Right-Front Right-Rear Left-Rear Left-Front... -
Page 10: Block Diagram Of The 9Bsst
SST FIVE CHANNEL POWER AMPLIFIER... -
Page 11: Typical Performance Graphs
Typical THD+N Harmonic Content Power supply artifacts are all below -95 dBu balanced input with 23dB gain shown The harmonic content of the 9BSST is all even order. dBu: dB relative to a reference of 0.7746 Volts Typical Phase Response Typical Frequency Response 8 ohm 120w<.01dB 20Khz. -
Page 12: Typical Crosstalk
SST FIVE CHANNEL POWER AMPLIFIER Typical IMD Sweep Typical THD+N Sweep Graph shows that distortion is essentially unaffected by load. 4v balanced input shown. 4 ohm 200w 4 ohm 200w 8 ohm 120w 8 ohm 120w Damping Factor Typical Crosstalk 8 ohm reference channel 2 reading with channels 1 &... -
Page 13: Bridging Channels
SST FIVE CHANNEL POWER AMPLIFIER... -
Page 14: External Dimensions
SST FIVE CHANNEL POWER AMPLIFIER... -
Page 15: Technical Specifications
Technical Specifications Power Output 120 watts per channel into 8 ohms 200 watts per channel into 4 ohms Gain Select and Sensitivity 29dB - 1.1Vin = 120W @ 8 Ohms - (1V Position) 23dB - 2.2Vin = 120W @ 8 Ohms - (2V Position) 17dB - 4.4Vin = 120W @ 8 Ohms - (4V Position) Input Impedance 50 Kohms single ended 20 Kohms balanced Distortion < 0.005% 20Hz to 20kHz at 120 watts into 8 ohms, IM or THD+noise < 0.007% 20Hz to 20kHz at 200 watts into 4 ohms Noise Measured with input shorted - 20Hz to 20kHz. >110dB below rated output 29dB gain (- 73dBu) >113dB below rated output 23dB gain (- 76dBu) >116dB below rated output 17dB gain (- 79dBu) Slew Rate >60 volts per microsecond Power Bandwidth <1 Hz to over 100 kHz Damping Factor Over 500 at 20 Hz, ref. 8 ohms Dimensions Rack mount version 48.3 x 13.3 x 48.3cm - 19” x 5.25” x 19“ with handles - mounted rack depth - 43.2cm - 17"... -
Page 16: Important Safety Instructions
Bryston authorized dealer to qualify for warranty service. The warranty is transferable from the original owner to a subsequent owner as long as a copy of the bill-of-sale from the original authorized Bryston dealer accompanies the re-sale. The copy of the bill of sale to any subsequent owner need ONLY include the Name of the Bryston Authorized Dealer and the Model and Serial number of the Bryston product The warranty will only be honored in the country of the original purchase unless otherwise pre-authorized by Bryston.
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